gnu: python-cov-core: Fix & improve synopsis & description.

* gnu/packages/python.scm (python-cov-core)[synopsis]: Capitalise and add
‘coverage’ key-word.
[description]: Use @code.

gnu: python-email-validator: Update to 1.0.2.

* gnu/packages/python.scm (python-email-validator): Update to 1.0.2.

gnu: python-mistune: Update to 0.7.3.

* gnu/packages/python.scm (python-mistune): Update to 0.7.3.

gnu: python-tabulate: Update to 0.7.7.

* gnu/packages/python.scm (python-tabulate): Update to 0.7.7

gnu: python-paste: Update to 2.0.3.

* gnu/packages/python.scm (python-paste): Update to 2.0.3.
[arguments]: Re-enable tests.  They now pass even on Python 3.
[properties]: Remove.
(python2-paste): Use package-with-python2 directly now.

gnu: python-colorama: Fix typo in synopsis.

* gnu/packages/python.scm (python-colorama)[synopsis]: Capitalise.

gnu: python-colorama: Update to 0.3.7.

* gnu/packages/python.scm (python-colorama): Update to 0.3.7.

gnu: python-debian: Update to 0.1.28.

* gnu/packages/python.scm (python-debian): Update to 0.1.28.

gnu: python-seaborn: Update to 0.7.1.

* gnu/packages/python.scm (python-seaborn): Update to 0.7.1.

gnu: python-unidecode: Update to 0.04.20.

* gnu/packages/python.scm (python-unidecode): Update to 0.04.20.

gnu: python-alembic: Update to 0.8.10.

* gnu/packages/python.scm (python-alembic): Update to 0.8.10.

gnu: python-orderedmultidict: Update to 0.7.11.

* gnu/packages/python.scm (python-orderedmultidict): Update to 0.7.11.

gnu: the-silver-searcher: Fix & improve description.

* gnu/packages/code.scm (the-silver-searcher)[description]: Fix typo, use
@command and @file mark-up, and clarify a bit.

gnu: the-silver-searcher: Update to 1.0.2.

* gnu/packages/code.scm (the-silver-searcher): Update to 1.0.2.
[source]: Use signed tarball from home-page.  Remove file-name.
[native-inputs]: Remove autoconf, automake, and libtool, as well as...
[arguments]: ...the ‘autoconf’ phase since we're now building a release.

gnu: youtube-dl: Update to 2017.01.24.

* gnu/packages/video.scm (youtube-dl): Update to 2017.01.24.

gnu: haunt: Update to 0.2.1

* gnu/packages/guile.scm (haunt): Update to 0.2.1.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: arandr: Remove timestamps from gzipped man pages.

* gnu/packages/xdisorg.scm (arandr)[source](modules, snippet): New
fields.

mapped-devices: 'source' can be a list of strings.

Reported by myglc2 <myglc2@gmail.com>.

* gnu/system/mapped-devices.scm (<mapped-device>)[source]: Update
comment to note that this can be a list of strings.

gnu: Add hyperestraier.

* gnu/packages/search.scm (hyperestraier): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: Add qdbm.

* gnu/packages/databases.scm (qdbm): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>